NDLI: Effect of replacing polyol by organosolv and kraft lignin on the property and structure of rigid polyurethane foam

Content Provider	Springer Nature : BioMed Central
Author	Pan, Xuejun Saddler, Jack N
Abstract	Background Lignin is one of the three major components in plant cell walls, and it can be isolated (dissolved) from the cell wall in pretreatment or chemical pulping. However, there is a lack of high-value applications for lignin, and the commonest proposal for lignin is power and steam generation through combustion. Organosolv ethanol process is one of the effective pretreatment methods for woody biomass for cellulosic ethanol production, and kraft process is a dominant chemical pulping method in paper industry. In the present research, the lignins from organosolv pretreatment and kraft pulping were evaluated to replace polyol for producing rigid polyurethane foams (RPFs). Results Petroleum-based polyol was replaced with hardwood ethanol organosolv lignin (HEL) or hardwood kraft lignin (HKL) from 25% to 70% (molar percentage) in preparing rigid polyurethane foam. The prepared foams contained 12-36% (w/w) HEL or 9-28% (w/w) HKL. The density, compressive strength, and cellular structure of the prepared foams were investigated and compared. Chain extenders were used to improve the properties of the RPFs. Conclusions It was found that lignin was chemically crosslinked not just physically trapped in the rigid polyurethane foams. The lignin-containing foams had comparable structure and strength up to 25-30% (w/w) HEL or 19-23% (w/w) HKL addition. The results indicated that HEL performed much better in RPFs and could replace more polyol at the same strength than HKL because the former had a better miscibility with the polyol than the latter. Chain extender such as butanediol could improve the strength of lignin-containing RPFs.
Related Links	https://biotechnologyforbiofuels.biomedcentral.com/counter/pdf/10.1186/1754-6834-6-12.pdf
Ending Page	10
Page Count	10
Starting Page	1
File Format	HTM / HTML
ISSN	27313654
DOI	10.1186/1754-6834-6-12
Journal	Biotechnology for Biofuels and Bioproducts
Issue Number	1
Volume Number	6
Language	English
Publisher	BioMed Central
Publisher Date	2013-01-28
Access Restriction	Open
Subject Keyword	Biotechnology Plant Breeding Environmental Engineering Renewable and Green Energy Microbiology Kraft lignin Lignin utilization Organosolv lignin Polyurethane Rigid foam Plant Breeding/Biotechnology Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Energy Management, Monitoring, Policy and Law Renewable Energy, Sustainability and the Environment Applied Microbiology and Biotechnology Biotechnology
Journal Impact Factor	6.1/2023
5-Year Journal Impact Factor	6/2023

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